?head or just
df[1:20, ]
Louis Plough wrote:
Hi,
I am simply looking for the function that will allow you to look at the top
20 lines of a long dataset?
LP
On Mon, Nov 1, 2010 at 10:46 AM, Louis Plough <lplo...@usc.edu> wrote:
Hi,
I am trying to generate all possible permutations (choose 2) of a vector,
b, for example--using 'combn' the combinations in only one direction are
generated...
b<-c(.1,.2,.3)
combn(b,2)
[,1] [,2] [,3]
[1,] 0.1 0.1 0.2
[2,] 0.2 0.3 0.3
[1,] 0.1 0.2 0.3 0.2 0.3 0.3 These
should also be there.
[2,] 0.1 0.2 0.3 0.1 0.1 0.2
Is there another R function that can do this??
Thanks,
Louis
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